/* latin-ext */
@font-face {
    font-family: 'Lato';
    font-style: normal;
    font-weight: 400;
    /*src: url(../font/S6uyw4BMUTPHjxAwXjeu.woff2) format('woff2');*/
    unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
    font-family: 'Lato';
    font-style: normal;
    font-weight: 400;
    /*src: url(../font/S6uyw4BMUTPHjx4wXg.woff2) format('woff2');*/
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
    font-family: 'Lato';
    font-style: normal;
    font-weight: 700;
    /*src: url(../font/S6u9w4BMUTPHh6UVSwaPGR_p.woff2) format('woff2');*/
    unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
    font-family: 'Lato';
    font-style: normal;
    font-weight: 700;
    /*src: url(../font/S6u9w4BMUTPHh6UVSwiPGQ.woff2) format('woff2');*/
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --base-vertical-rhythm: 1.5rem;
    --base-transition: 600ms cubic-bezier(0.22, 1, 0.19, 1);
    --button-bg-color: mediumseagreen;
    --button-border-radius: 0.15rem;
    --button-focus-bg-color: seagreen;
    --button-font-size: 1rem;
    --button-text-color: white;
    --form-font-family: 'Lato', sans-serif;
    --input-bg-color: white;
    --input-border-color: #eaeaea;
    --input-border-focus-color: #d8d8d8;
    --input-border-radius: 0.15rem;
    --input-error-color: red;
    --input-padding: 0.75rem;
    --input-placeholder-color: gray;
    --input-text-color: black;
    --input-underline-color: dodgerblue;
}

* {
    box-sizing: border-box;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: left;
    font-family: 'Lato', sans-serif;
    min-height: 100vh;
    padding: 1rem;
    background-color: #fafafa;
}

h1 {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.2;
}

p {
    font-size: 0.85rem;
    line-height: 1.4;
}

section {
    margin: 0 auto;
    width: 100%;
    max-width: 500px;
}
section > * + * {
    margin-top: var(--base-vertical-rhythm);
}

.form-group {
    position: relative;
    display: flex;
    flex-direction: column-reverse;
    width: 100%;
    border-radius: var(--input-border-radius);
}
.form-group + * {
    margin-top: var(--base-vertical-rhythm);
}

label {
    position: absolute;
    top: var(--input-padding);
    left: calc(var(--input-padding) + 1px);
    margin-bottom: calc(var(--input-padding) * -1.5);
    font-size: 0.5rem;
    letter-spacing: 0.0025rem;
    text-transform: uppercase;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    -webkit-transform: translateY(calc(var(--input-padding) / 4));
    transform: translateY(calc(var(--input-padding) / 4));
    transition: opacity var(--base-transition), -webkit-transform var(--base-transition);
    transition: opacity var(--base-transition), transform var(--base-transition);
    transition: opacity var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition);
}
.form-group:focus-within label {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
}
label .error {
    color: var(--input-error-color);
    opacity: 0;
    transition: opacity var(--base-transition);
}
label .error:before {
    content: ' - ';
}

input[type="text"],
input[type="email"] {
    -webkit-appearance: none;
    padding: calc(var(--input-padding) * 1.5) var(--input-padding);
    font-family: var(--form-font-family);
    font-size: 1rem;
    width: 100%;
    color: var(--input-text-color);
    background-color: var(--input-bg-color);
    outline: none;
    border: 1px solid var(--input-border-color);
    border-radius: var(--input-border-radius);
    box-shadow: rgba(0, 0, 0, 0.05) 0 0.5rem 1rem -0.25rem;
    transition: border-color var(--base-transition), box-shadow var(--base-transition), transition var(--base-transition);
}
input[type="text"]::-webkit-input-placeholder,
input[type="email"]::-webkit-input-placeholder {
    color: var(--input-placeholder-color);
    transition: color var(--base-transition), -webkit-transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition);
    transition-delay: 200ms;
}
input[type="text"]:-ms-input-placeholder,
input[type="email"]:-ms-input-placeholder {
    color: var(--input-placeholder-color);
    transition: color var(--base-transition), -webkit-transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition);
    transition-delay: 200ms;
}
input[type="text"]::-ms-input-placeholder,
input[type="email"]::-ms-input-placeholder {
    color: var(--input-placeholder-color);
    transition: color var(--base-transition), -webkit-transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition);
    transition-delay: 200ms;
}
input[type="text"]::placeholder,
input[type="email"]::placeholder {
    color: var(--input-placeholder-color);
    transition: color var(--base-transition), -webkit-transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition);
    transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition);
    transition-delay: 200ms;
}
input[type="text"]:focus,
input[type="email"]:focus {
    border-color: var(--input-border-focus-color);
    box-shadow: none;
}
input[type="text"]:focus::-webkit-input-placeholder,
input[type="email"]:focus::-webkit-input-placeholder {
    color: transparent;
    -webkit-transform: translateX(calc(var(--input-padding) / 2));
    transform: translateX(calc(var(--input-padding) / 2));
    transition-duration: 0ms;
    transition-delay: 0ms;
}
input[type="text"]:focus:-ms-input-placeholder,
input[type="email"]:focus:-ms-input-placeholder {
    color: transparent;
    transform: translateX(calc(var(--input-padding) / 2));
    transition-duration: 0ms;
    transition-delay: 0ms;
}
input[type="text"]:focus::-ms-input-placeholder,
input[type="email"]:focus::-ms-input-placeholder {
    color: transparent;
    transform: translateX(calc(var(--input-padding) / 2));
    transition-duration: 0ms;
    transition-delay: 0ms;
}
input[type="text"]:focus::placeholder,
input[type="email"]:focus::placeholder {
    color: transparent;
    -webkit-transform: translateX(calc(var(--input-padding) / 2));
    transform: translateX(calc(var(--input-padding) / 2));
    transition-duration: 0ms;
    transition-delay: 0ms;
}
input[type="text"]:focus, input[type="text"]:not(:placeholder-shown),
input[type="email"]:focus,
input[type="email"]:not(:placeholder-shown) {
    padding: calc(var(--input-padding) * 2) var(--input-padding) var(--input-padding);
}
input[type="text"]:not(:placeholder-shown):invalid:not(:focus),
input[type="email"]:not(:placeholder-shown):invalid:not(:focus) {
    color: var(--input-error-color);
    border-color: var(--input-error-color);
}
input[type="text"]:not(:placeholder-shown):invalid:not(:focus) + label .error,
input[type="email"]:not(:placeholder-shown):invalid:not(:focus) + label .error {
    opacity: 1;
}
input[type="text"]:not(:placeholder-shown) + label,
input[type="email"]:not(:placeholder-shown) + label {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
}
input[type="text"]:-webkit-autofill + label,
input[type="email"]:-webkit-autofill + label {
    opacity: 1;
}

button {
    padding: calc(var(--input-padding) * 1.5) calc(var(--input-padding) * 3);
    width: 100%;
    font-family: var(--form-font-family);
    font-size: var(--button-font-size);
    color: var(--button-text-color);
    background-color: var(--button-bg-color);
    border: none;
    border-radius: var(--button-border-radius);
    box-shadow: rgba(0, 0, 0, 0.05) 0 0.5rem 1rem -0.25rem;
    transition: background-color var(--base-transition), box-shadow var(--base-transition), transition var(--base-transition);
}
button:hover, button:focus {
    cursor: pointer;
    outline: none;
    background-color: var(--button-focus-bg-color);
    box-shadow: none;
    -webkit-transform: translateY(1px);
    transform: translateY(1px);
}
button:active {
    -webkit-transform: translateY(2px);
    transform: translateY(2px);
}

/*@media (min-width: 400px) {
    button {
        width: auto;
    }
}*/
